html, body {
    width: 100%;
    min-width: unset;
}
@media (max-width: 602px) {
    .main_cover_img {
        width: auto;
        overflow: hidden;
        background-position: center center;
    }
    .main_box {
        width: 100%;
    }
}

@media (max-width: 650px) {
    .background {
        background-position-x: 80%;
    }
    .sele-content{
        justify-content: space-evenly;
    }
    .cont {
        border-radius: 3px;
        width: 48%;
        margin: 3px;
        height: 210px;
    }
   .introduce_span {
        font-size: 15px;
    }
    .cont-img {
        width: 100%;
        height: 109px;
        border-radius: 3px;
    }
    .form {
        width: 250px;
    }
    .out_search {
        width: 266px;
    }
    .other_li {
        margin: 0 4px;
    }
}
@media (max-width: 470px) {
    .search-input {
        width: 70px;
    }
    .title_content {
        font-size: 10px;
    }

}